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5dd6af2ecb
Add api for configuring pin mux. Signed-off-by: Vitaly Andrianov <vitalya@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
/*
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* K2G: Pinmux configuration
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*
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* (C) Copyright 2015
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* Texas Instruments Incorporated, <www.ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __ASM_ARCH_MUX_K2G_H
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#define __ASM_ARCH_MUX_K2G_H
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#include <common.h>
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#include <asm/io.h>
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#define K2G_PADCFG_REG (KS2_DEVICE_STATE_CTRL_BASE + 0x1000)
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/*
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* 20:19 - buffer class RW fixed
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* 18 - rxactive (Input enabled for the pad ) 0 - Di; 1 - En;
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* 17 - pulltypesel (0 - PULLDOWN; 1 - PULLUP);
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* 16 - pulluden (0 - PULLUP/DOWN EN; 1 - DI);
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* 3:0 - muxmode (available modes 0:5)
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*/
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#define PIN_IEN (1 << 18) /* pin input enabled */
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#define PIN_PDIS (1 << 16) /* pull up/down disabled */
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#define PIN_PTU (1 << 17) /* pull up */
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#define PIN_PTD (0 << 17) /* pull down */
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#define MODE(m) ((m) & 0x7)
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#define MAX_PIN_N 260
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#define MUX_CFG(value, index) \
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__raw_writel(\
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(value) | \
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(__raw_readl(K2G_PADCFG_REG + (index << 2)) & \
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(0x3 << 19)),\
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(K2G_PADCFG_REG + (index << 2))\
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);
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struct pin_cfg {
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int reg_inx;
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u32 val;
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};
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static inline void configure_pin_mux(struct pin_cfg *pin_mux)
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{
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if (!pin_mux)
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return;
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while ((pin_mux->reg_inx >= 0) && (pin_mux->reg_inx < MAX_PIN_N)) {
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MUX_CFG(pin_mux->val, pin_mux->reg_inx);
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pin_mux++;
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}
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}
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#endif /* __ASM_ARCH_MUX_K2G_H */
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